EP 0036332 A1 19810923 - Monitoring system for monitoring the state of nuclear reactor core.
Title (en)
Monitoring system for monitoring the state of nuclear reactor core.
Title (de)
Monitorsystem zur Überwachung des Reaktorzustandes.
Title (fr)
Système moniteur de contrÔle d'état d'un réacteur nucléaire.
Publication
Application
Priority
JP 3534580 A 19800319
Abstract (en)
[origin: US4495142A] The nuclear reactor container of a boiling water reactor has a dry well and a pressure suppression chamber. The level of the radioactivity in the cooling water filling the pressure suppression chamber is measured by a liquid radiation monitor. An iodine monitor measures a level of the radioactivity of the iodine in the space above the surface of cooling water in the pressure suppression chamber, while a noble gas monitor measures a level of the radioactivity of noble gas in the same space. Outputs from the liquid radiation monitor, the iodine monitor and the noble gas monitor are delivered to an accident judging device which makes judgement as to occurrence of perforation of fuel rods and melt down of fuel rods in the event of a Loss Of Coolant Accident (LOCA), the result of which is displayed at a display device.
IPC 1-7
IPC 8 full level
G21C 9/012 (2006.01); G21C 17/00 (2006.01)
CPC (source: EP US)
G21C 9/012 (2013.01 - EP US); G21C 17/00 (2013.01 - EP US); Y02E 30/30 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR SE
DOCDB simple family (publication)
EP 0036332 A1 19810923; EP 0036332 B1 19850911; DE 3172188 D1 19851017; JP S56132594 A 19811016; JP S6310799 B2 19880309; US 4495142 A 19850122
DOCDB simple family (application)
EP 81301141 A 19810318; DE 3172188 T 19810318; JP 3534580 A 19800319; US 24551581 A 19810319